Ubuntu Linux is a Debian derivative that aims to bring Linux mainstream. Questions on this site should generally refer to Ubuntu Server. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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first program to run after ssh connection

I have a user 'test' and I had modified /etc/passwd file to run a certain script of my own (lets call it somescript.sh) whenever 'test' logs-in or does ssh. I later changed the '/etc/passwd' file to ...
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1answer
49 views

Can't log into AMI, assigning new keypairs doesn't work - how do I completely reset SSH?

Something bizarre happened to an Ubuntu EC2 instance of mine - while it used to have a keypair assigned for login that worked fine (created through the default EC2 console channels), the assigned ...
1
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2answers
51 views

Permission Issues When Pushing to Git Remote

I've spent the past few days trying to set up a Git Remote on my server so I can push changes to my web-server to it. The problem is that I'm getting the following errors while doing it: $ git push ...
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0answers
32 views

Pulling docker images from behind whitelisted proxy

I'm attempting to deploy my application using docker on a corporate AWS instance that sits behind a http proxy. I have installed docker and whitelisted the base image pull address. However when I ...
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votes
1answer
36 views

website uses an invalid security certificate

I have website on ubuntu with apache server. Domain is from godaddy. When I type example.com it's running file under SSL (with https). But, for www.example.com it's giving me below error. ...
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0answers
22 views

Upgrading ssh6.9p1 on new AWS T2 Ubuntu instance locks me out [duplicate]

I'm trying to upgrade ssh on a default Amazon Ubuntu t2 micro instance, which uses ssh 6.6.1p1. In order to pass PCI compliance, ssh needs to report v6.7 or higher, otherwise Trustwave security scans ...
2
votes
1answer
102 views

MariaDB Galera Cluster falls out of sync easily

We're trying to debug an issue with a MariaDB cluster. We're running Maria 10.0.19 on c4.large instances in Amazon EC2; the OS is Ubuntu 14.04 (Trusty). There are three machines clustered together, ...
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votes
0answers
129 views

Install last version of mono on ubuntu 12.04

I have a fresh installation of ubuntu 12.04 and I would like to install the last version of mono. I am folllowing this link. Edit to add exactly What I have did. I copy and paste the first arguments ...
0
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1answer
32 views

MySQL slow connection

I am running a laravel application that is on a separate server than my MySQL database. If I run the query on the Mysql server it takes the expected 0.00 - 0.01 seconds to return. However when I log ...
0
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1answer
22 views

Gluster FS. Rebuild replicated volume

I am playing with GlusterFS. And now I am curious how to fully rebuild replicated volume. So I`ve created 1 replicated volume from server1 and server2 nodes: root@server1:~# gluster volume create ...
-1
votes
2answers
40 views

Webserver is fetching rather than executing CGI files

I am settings up Bugzilla for the first time, and I've been getting this error: TEST-FAILED Webserver is fetching rather than executing CGI files. Check the AddHandler statement in your httpd.conf ...
0
votes
1answer
84 views

Can't connect to mysql using ssl with compiled php [closed]

I have been bashing my head against a wall for a couple of days now. I just cant figure it out. I Run ubuntu 12 with plesk 12 and apache 2.2. I have tried compiled PHP 5.6.10 and PHP 5.6.11 with ...
1
vote
0answers
35 views

Postfix no outer mails recived because of “unknown user 550” (sending & local reciving possible) [closed]

I have the following problem: I can't recive emails on my email account on my server. Postfix sends back: error: unknown user (550) - mymail@domain.tld But it is possible to send mail with other ...
2
votes
1answer
48 views

cloud server performance vs same specification dedicated server?

I have a web application written in php (5.6.10) and using Postgresql (9.4) we have about 4k users per day and about 20k page views per days, my main issue that we are running in cloud host with 2 ...
0
votes
1answer
30 views

Ubuntu Iptables FTP passive mode

I have a problem when trying to define iptables rules in my ubuntu server. I reject all connections and allow some like FTP. The problem is that in passive mode I can connect but I cannot list ...
0
votes
2answers
96 views

Duplicity backup to S3: BackendException

I'm trying to configure my Duplicity installation to backup to an Amazon S3 bucket. I keep getting a BackendException error with no further details. EDIT: I've removed my Duply configuration from ...
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0answers
15 views

VSFTPD Cannot change directory, cannot figure out why on ubuntu

I cannot connect to my vsftpd instance. I get the following error 500 OOPS: cannot change directory:/var/www/[...] I'm running Ubuntu 14.04.2 LTS This is my vsftpd config file listen=YES ...
-1
votes
1answer
32 views

postfix/smtpd lost connection after AUTH from <server>[ip]

I try to send mail from a private LAN server to my private postfix server and I get this error, but I can't find its meanning: # /var/log/mail.log Jul 8 15:02:50 mail-srv postfix/smtpd[18222]: ...
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0answers
22 views

ubuntu server dropping packets

I have a Ubuntu server 14.04 running nginx 1.8 with gunicorn. nginx is with 16 workers (1024 connections) system network stat using ss -s command is: Total: 15713 (kernel 0) TCP: 198006 (estab ...
0
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2answers
60 views

Removing old kernels

My boot partition is full and I can't install new kernel versions. So I tried to remove some old versions like this: get active kernel uname -a Linux Ubuntu-1404-trusty-64-minimal ...
1
vote
3answers
42 views

How can I set up two virtual Ubuntu Web Servers and split web traffic between them based on incoming domain?

I have a rack mount server here (HOSTA, running ubuntu 12.04), that has two virtualized installations of ubuntu (VIRTA & VIRTB, via vboxheadless, one is 12.04 and the other is 14.04). One has the ...
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votes
1answer
43 views

How to find out reason of python script stop working in background?

I've bought a VDS server some days ago just to have some Telegram Bots working 24/7. I can't keep shell always open, so I've decided to use this "hack": 1. In Python script add #!/usr/bin/python3.4 ...
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votes
2answers
23 views

Changes to php.ini have no effect

When I look at the results of phpinfo() it shows my load configuration file as /opt/bitnami/php/etc/php.ini. However, when I make changes to this file and restart apache those changes are not ...
0
votes
1answer
9k views

after install ssl certificate fatal bind xxx.xxx.xxx.xx port 587 already in use

I have an Ubuntu 12.04 server setup with Virtualmin/Webmin latest version using a self-signed certificate generated during installation working fine for more than a year without any problem. This week ...
0
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1answer
29 views

Sendmail sends unsolicited emails [duplicate]

I have a problem with sendmail. All of the sudden it started sending emails that its not supposed to send (obviaou spam messages about viagra, porn etc.). I checked some tools that supposedly check ...
0
votes
1answer
37 views

my.cnf file does not reflect changes on ubuntu 12.04

Hello I am running an application install which requires thread_stack = 256k in my.cnf file. The location of the file is etc/mysql/my.cnf and I updated the value and restarted the mysql server,but the ...
3
votes
3answers
284 views

Infrequent input/output error - Linux server

Once in a while, we encounter input/output errors on one of our disks. Our server (DELL PowerEdge R720, Ubuntu 14.04) uses the Perc H710 Raid controller, and the disk that is producing the error is a ...
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0answers
63 views

Creating IPsec tunnel Ubuntu 15.04 ip sec tools

I'm trying to setup a VPN/Tunnel between three(3) Ubuntu 15.04 servers. I've googled and it seems that I can use IPsec tools for this. I've only found the following ...
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votes
0answers
17 views

how to in setting up openvpn link between two systems?

I am new to openvpn. I have an application which normally send traffic via my host 2 available interfaces (eth0 and eth1) to outside world. I want to create secure channel via these two interfaces. ...
0
votes
1answer
24 views

Need to enter a dhclient at every restart at Ubuntu

my internet was working just fine until one certain day. From this day until today every time I restart the pc I have to execute a dhclient to make internet connection work again. I searched old ...
0
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0answers
8 views

Memcached in Munin

I tried to configure the munin to load the memcached plugin. But the memcached plugin wont show up when i add the --suggest to the munin-node-configure command. But i appear when i do not add that ...
0
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0answers
38 views

Save cache folder on seperate partition with superfast filesystem?

I'm reading about disks, partitions, filesystems, recovery. I have a lack of knowledge about them. To learn things I mentally model abstract situations. So, imagine... I have the ubuntu server with ...
0
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3answers
65 views

Connection established. Still ssh login issue to ubuntu server on ec2 instance

I am not able to login to my Server (ec2 instance). Before this I was able to login. No changes has been made to server or Security groups ! please help me out ! ashish@ashishk:~/MyScripts$ ...
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0answers
20 views

Discrepancy between total sectors and calculated total sectors using fdisk

I use ubuntu on vmware. With fdisk command I got this output: Disk /dev/sda: 42.9 GB, 42949672960 bytes 255 heads, 56 sectors/track, 5874 cylinders, total 83886080 sectors Units = sectors of 1 * 512 ...
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0answers
5 views

Share Ubuntu VM folder with Windows to use Visual Studio with Docker Volume [migrated]

I've been using Docker for nearly a year, running it on a Ubuntu 14.04 VM, with Sublime Text 3 for programming in Javascript/php. I would like to be able to also use visual studio for editing the ...
-2
votes
1answer
43 views

Apache2 Ubuntu 500 Error

[Sun Jul 05 10:19:53.611919 2015] [mpm_event:notice] [pid 4170:tid 140530536925056] AH00489: Apache/2.4.10 (Ubuntu) configured -- resuming normal operations [Sun Jul 05 10:19:53.612026 2015] ...
-2
votes
1answer
75 views

how to deploy Laravel 5 app on ubuntu pc for production?

i want to deploy a laravel 5 app on my ubuntu pc having php,mysql,apache,composer installed. one way is to use php artisan serve but i think it's not the best way to do that because it can only ...
0
votes
1answer
25 views

How can I make the node server with only accept some port?

I have LAMP server now I want another server connect to my mysql with another ip address how can I do that I don't know the keyword to search I will explain with the picture [client] ---> ...
-1
votes
1answer
44 views

Internal server error after chaning the Allow override in Apache.conf (Ubuntu)

i am facing a error after changing the Allow overide to ALL and Then i get internal server Error. <Directory /var/www/> Options Indexes FollowSymLinks AllowOverride All Require all ...
-3
votes
1answer
40 views

can't switch to root or use sudo [closed]

I've just come into the following problem: For some reason I can't use su or sudo: usr@usr-MS-7816:~$ su Password: su: Authentication failure usr@usr-MS-7816:~$ sudo su [sudo] password for usr: ...
0
votes
0answers
34 views

How to setup web UI to view Master Spark Node from Host Machine

I think the solution is to port forward twice, but I am unable to ssh into the master (source) machine: How do I view the Spark web UI? I am following this tutorial: ...
-1
votes
1answer
76 views

502 errors on WordPress / nginx / php5-fpm

I've looked through lots of other Server Fault and Google results that all have talk about generally similar situations, but I can't quite find the insight that I'm looking for. I would appreciate any ...
1
vote
1answer
17 views

kadmind error - krb5_recvauth: start_seq_get is not supported in the HDBGET keytab type

I'm trying to migrate a heimdal KDC with an OpenLDAP backend from a Debian 5.x server (heimdal 1.2.dfsg.1-2.1) to a Ubuntu 14.04 server (heimdal 1.6~git20131207+dfsg-1ubuntu1.1), and am running into ...
0
votes
1answer
30 views

Ubuntu Server 14.04.2 LTS: MOTD always displays the same packages to be updated

Since yesterday I always get this message when I log in via SSH: 2 packages can be updated. 0 updates are security updates. There's nothing to be updated running apt-get update and apt-get upgrade: ...
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0answers
40 views

Mysql won't start because of the PID file

I've been trying to start Mysql but when I type service mysql start I get: Starting MySQL ... * The server quit without updating PID file (/var/run/mysqld/mysqld.pid). Although I know I ...
0
votes
1answer
45 views

Can't access VPN server through ADSL modem

We have mikrotik router in our office which takes ethernet WAN(RJ45 plug) as input and connect LAN network. We switched to ADSL connection from fibernet connection. Now With ADSL connection I can't ...
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0answers
21 views

Correct tmux disconnect

I have got ubuntu server 12.04 for android application. Application server(python, postgresql) started via tmux. After closing tmux terminal(or "tmux detach") on my computer, application server is ...
0
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0answers
41 views

LDAP, nslcd and intermittent “Invalid user”

EDITED for simplification and new information. Some of my Ubuntu boxen, after an upgrade (12.04 -> 15.04), decided they don't want to accept new users. Sometimes. I turned off nscd so it wouldn't ...
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votes
0answers
11 views

Apache can't find QueXF in my installation

I am interested in installing QueXF on Ubuntu (Desktop, sadly) 15.04 64-bit. I followed these instructions, except with the newest versions of QueXF and its companions. I got to the point where I was ...
2
votes
1answer
34 views

Clarification of netcat result

I've been trying to debug an issue on our servers and Im confused by this response from netcat. Can anyone explain why Im getting these 2 contradictory messages when checking to see if a port is ...